Oven door



S. A. WILDE OVEN noon Nov; 26, 1929.

Filed Feb. 28. 1928 2 .Sheets-Sheet 1 ATTDRNE'LPE:

S. A. WILDE Nov. 26, 1929.

OVEN DOOR Filed Feb. 28, 1928 2 Sheets-Sheet 2 Patented Nov. 26, 1929 Unitas srarss mam FATENT SAMUEL A. WILDE, OF TAUNTON, MASSACHUSETTS, ASSIGNOR TO GLENWVOOD RANGE COMPANY, OF TAUNTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS OVEN DOOR Application filed February 28, 1928. Serial No. 257,641.

The invention relates to an improvement in oven doors and pertains essentially to the door connections by which it has permitted opening and closure with proper retention and support in both its open and closed posi tions.

Among the objects of the invention is to provide a construction possessing the following advantages The elimination of ordinary hinge connections. The ordinary hinge connections for an oven door are defective for the connections are very susceptible to wear and when they become worn the door can no longer be tightly closed; there is no compensation for wear.

Another difliculty with hinged connections resides in the fact that if the door casing against which the door closes becomes slightly deformed with respect to its original setting on account of thermal changes a door mounted upon ordinary hinged connections can no longer properly close.

Accordingly with the doing away of hinged connections it is my object to provide a construction in which the door will tightly close even though the door connecting parts become worn, wear being compensated for in this connection; also it is my object to pro vide a construction whereby the door will as sumo a position of substantial closure even though the door casing becomes slightly deformed from its original setting by heat.

Among the further objects of the invention is to provide A construction by which the door will be automatically maintained in tightly closed position by its own weight;

A construction in which the door, in the nature of a drop door, will assume a position where the inner face of the door or lining will lie substantially flush with the bottom of the oven or edge plate at the'front thereof, and

A construction, also, having easily replaceable parts and with permitted removal of the door and replacement thereof with a new door as occasion may require.

The invention can best be seen and understood by reference to the drawings, in which F 6 is a cross section in enlarged detail of certain of the door-connecting parts as shown in Fig. 5 but with the door open, and

Fig. 7 is a cross section of a detail of con struction to which reference will later be made. Y l

1 represents the oven door which covers a doorway leading to an oven 2 of which 3 represents the bottom of the oven.

The doorway of the oven is framed by a casing forming a part of the stove structure in which the oven is contained. It comprises a top edge plate 4 and side edge plates 5, 5.

The outer faces of these edge plates lie in the same plane flush with one another. The bottom edging to the doorway casing comprises an edge plate 6 preferably bent to extend around the sides of the oven adjacent its bottom, the bottom of the oven being preferably secured to it and the plate itself being secured to the stove structure. The plate 6 is so arranged that its outer face will lie just outside the plane of the top and side edge plates 4, 5, 5 of the doorway casing parallel therewith. Thus arranged the plate 6 will present a top edge? which lies at the bottom of the doorway casing substantially flush with the bottom of the oven which is extended to meet the edge 7 by a flanged space plate 8 secured to the oven bottom and to the plate 6.

p The door 1 comprises an outer cast body 9 having an edge rim 10. Closure of the door is effected by the bearing of this rim against the faces of the edge plates 4, 5, 5 along the top and sides of the doorway casing, while that portion of the rim 10 at the bottom of the door lies just above the top edge 7 of the edge led plate 6 at the bottom of the doorway casing, the bottom edge 11 of the door then either resting upon the top edge 7 of the plate 6 or retained to lie so near this edge as to close the doorway at this point. The door 1 further comprises an inside panel 12 which closes an opening in it. This panel has a flangeforming rim 13 which extends outward over a flange 14L on the inside of the door, the flanged rim of the panel being secured to the flange 14 on the door by means of clips 15 which extend over bosses 16 on the inside of the door and are fastened to it by screws 17. 18 represents the inside facing or lining of the door which is also held in place by the screws 17 The door is provided at the top with a handle 18 by which it is opened and closed.

Reference will now be made to the door connections by which it has permitted opening and closure and is maintained either in an open or closed position. 7

Attached to the bottom corner edges of the door at either side thereof are curved arms 20. Each of these arms presents an under surface 21 and these surfaces of the arms merge with and accordingly extend from the bottom edge 11 of the door. The arms extend inwardly through the doorway with downward curved extension so that when the door is closed the arms will assume a downturned position substantially as shown in Fig. 3,

spaces being left beyond the opposite ends of the space plate 8 of the oven bottom to permit of such downward extension of the arms.

5, 5 of the doorway casing are stops 24 and 25, respectively, these stops preferably forming integral connection with the respective plates. The stops on each plate are arranged to lie one above the other and in alignment with the pintles on the arms so that as the arms are turned during the opening and closing of the door or other manipulation thereof, as will later be explained, the pintles will be brought into engagement with one or the other of the stops. j

To assist in the retention of the arms and the guidance of the pintles on the ends thereof to have proper engagement with the respective stops as the door is manipulated, the ends of the arms and pintles together with the stops are enclosed in ears 26 secured to themside of the edge plates 5, 5 of the doorway casing.

Extending inwardly from the interior of the door list adjacent either side thereof and about midway the door are latches 27. These latches are provided with'base rings 28 by which they are fastened to the door and they are fastened by the SZLIQBSCTGWS 17 as secure other parts of the door previously referred to, these screws passing through the base rings of the respective latches and holding them securely in place. The latches project ii wardly at sul stantially right angles to the inside face'of the door and each is provided with an inclined locking edge 29 and a beveled or cam edge 30 leading to the lower end of the loch'ng edge 29. The respective latches have interlocking engagement with the edge plates 5, 5 of the doorway casing. Tothis end the respective or go plates 5, 5 are provided with horizontal edges 31 with beveled edges leading thereto the plates being cut away above the edges 31 to permit of the latches on the door extending inwardly by them and have interlocking engagement therewith by extension over the edges 31 to lie in back of the plates when the door is closed. The edges 29, 80 on the respective latches and the edges 31., 32 on the edge plates 5, 5 of the doorway casing consequently bear a certain determinate relation to one another. These edges bear also-a certaindeterminate relation to the stops 24- and 25 on tiie respective edge plates 5, 5, but the relation of, all these edges to one can bestbe understood in the light of operation of the door, reference being first made, however, to the relation of the various parts and especially these edges and ps who. the door is in its closed position. .16 door is in its closed position its .a can run 10 will have bearing engagement with the top edge plate t and side edge plates 5, 5. At

. the bottom its rim will lie above the top edge 7 of the bottom face plate 6 of the doorway casing, the bottom edge 11 of the door lying substantially in contact with the edge 7, all as previously describedj At this time the latches-'2'? will be extended inwardly by the edge plates 5, 5 at the sides of the doorway casing and the inclined locking edges 29 of the latcneswill lie back of the beveled edges 82 of the edge plates resting thereon. Conseqnently the door will hang suspended by its latches resting on the edge plates and in this connection it will be observed that the inclination of the engaging edges 29 and 32 on the latches and'edge plates, respectively will be such as to cause the door by its own weight to move inwardly and thereby tightly hug the edgings which form the doorway casing. At thiszsame time with the door closed the arms 20 on the door will have a downturned posit-ion inside the doorway of the oven as previously explained and the pintles 23 on the arms will lie some little distance below the stops 2% on the edge plates. i

The dooris operated for effecting its opening and closure and for maintaining it in its open or closed position in the following manner 'Thedoor isopened by first lifting it until its latches 27 clear the edges 31 on the edge plates so that the latches may be moved outwardly over these edges. The proper elevation of the door to secure this end and any excessive raising of the door is prevented by the pintles 23 on the arms being brought into engagement with the stops 24 when the door is lifted. Having lifted the door it may now be moved downwardly to an open position as shown in Fig. 4. During such movement the door will turn on its arms 20 which pivot around the top edge 7 of the edge plate (3 at the bottom of the doorway casing. The opening of the door continued until the pintles 23 on the respective arms are turned to have engagement with the stops 25 which limit sucn turning, the bottom edge portion of the door then bearing against the top outer face of the edge plate 6. When the door is thus turned to its full open position the inner face or face of the lining thereof will lie substantially flush with the bottom of the oven all shown in Fig. 4. During this operation also the cars 26 within which the ends of the arms operate assist in the guidance of the operating parts.

The door is closed by a reverse movement until the cam edges 30 on the respective latches are brought into drawing engagement with the edges 31 of the edge plates. As thecam edges 30 on the latches draw over the edges 31 of the edge plates, the door will be lifted until the cam edges 30 of the latches clear the edges 31 of the edge plates when the door will drop and the latches will assume a locking position lying in back of the respective edge plates with the locking edges 29 thereof engaging and resting upon the beveled edges 32 of the edge plates, the door and operating parts then assuming a position like that incident to the closed position of the door as previously described.

The door may be removed by removing c -her of the ears 26 and lifting the adjacent side of the door and withdrawing it together with its arms, replacement of the door being obtained by a reverse operation.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States 1. In an oven having top, side and bottom edge-forming plates framing the doorway of the oven, the combination therewith of an oven door closing against the top and side edge-forming plates above the bottom plate, arms on which the door turns projecting from the bottom of the door at the back with extension through the doorway and with bearing to turn on the edge of the bottom plate, lateral projections from said arms with extension to lie back of the plates at the sides of the. doorway, and stops with which said lateral projections have engagementfor holding the door in place when turned to occupy an open position.

2. In an oven having top, side and bottom edge-forming plates framing the doorway of the oven, the combination therewith of an oven door closing against the top and side edge-forming plates above the bottom plate,

arms on which the door turns projecting from the bottom of the door at the back with extension throiwh the doorwa T and with bearing to turn on the top of the bottom p'iate','the under surfaces of said arms extending respecedge-forming plates, the bottom one of said plates lying outside the plane of the other plates, an oven door closing against the top and side edge-forming plates above the bottom plate, arms on which the door turns projecting from the bottom of the door at the back with extension through the doorway and with bearing to turn on the top edge of the bottom plate, the under surfaces of said arms extending respectively from the bottom edge surface of the door whereby the bottom edge of the door will co-operate with the top edge of said bottom plate to form a tight joint when the door is closed, means inside the doorway co-operating with said arms for holding the door in place when open, and means for holdthe door in place when closed.

4. In an oven having a bottom and a doorway framed by top, side and bottom edge forming plates, the top edge of the bottom plate lying substantially flush with the bottom of the oven, the combination therewith of an oven door closing against the top and side edge-forming plates above the bottom plate, arms on which the door turns projecting from the bottom of the door at the back with entension through the doorway and with bearing to turn on the top edge of the bottom plate, the under surfaces of said arms extending re spectively from the bottom edge surface of the door whereby the inside face of the door will lie substantially flush with the top edge of said bottom plate and bottom of the oven when the door is open, and means inside the doorway co-operating with said arms for holdingthe. door in place when open.

5. In an oven having a bottom and a doorway framed by top, side and bottom edgeforming plates, the top edge of the bottom plate lying substantially flush with the bottom of the oven, the combination therewith of an oven door closing against the top and side edge-forming plates above the bottom plate, bent arms on which the door turns projecting from the bottom of the door at the back with hearing to turn on the top edge of the bottom plate and extending through the doorway with downward extension inside the doorway when the door is occupying a closed position, the under surfaces of said arms extending respectively from the bottom edge surfaces of the door in substantial continuation thereof, lateral projections from said arms with extension to lie back of the edge-forming plates at the sides of the doorway, stops with which said lateral projections have engagement for holding the door in place when open, means releasable on lifting the door for holding it in place when closed, and other stops with which said lateral projections have engagement on liftin the door for limiting the lifting move- SAMUEL A. /VILDE.

ment thereof. 

